| Name | Meaning | Gender | Origin |
|---|
| Polly | Bitter
| Female | English |
| Polly | Bitter
| Female | English |
| Porter | gatekeeper, carrier | Male | Latin |
| Power | | Male | |
| Preston | dweller at the church, priest's settlement | Male | English |
| Purdy | Variation on pretty. | Unisex | |
| Racer | One that races around. Speedy | Male | Word |
| Rambo | | Male | |
| Ranger | dweller in the field A warden employed to protect a forest area. | Male | |
| Ransom | son of the shield; redeemer | Male | English |
| Ratboy | | Unisex | Hebrew |
| Razor | A sharp-edged cutting instrument used to remove hair. | Unisex | |
| Reaper | | Unisex | |
| Rebel | One that resists of defies authority | Male | Word |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Rhett | Enthusiastic, stream.
| Male | English |
| Rhino | | Unisex | |
| Riley | courageous | Female | Irish |
| Rio | River
| Male | Spanish |
| Ripley | after the novel and the movie The Talented Mr. Ripley | Male | English |
| River | | Male | |
| Robert | Famed: bright: shining. 14th-century King Robert the Bruce. Robert Burns the poet.
| Male | English |
| Robin | Famed: bright: shining Form of Robert popular since the medieval days of Robin Hood. Robinson: (English) Son of Robert Famed: bright: shining. Surname.
| Male | |
| Rocco | rest | Male | Italian |
| Rocket | To move swiftly and powerfully | Male | Word |